An attorney defending the teen, Mehmet Emin Altunses, disagreed with the court's decision to try the case behind closed doors and asked for the justices to be replaced, Dogan news agency reported.
The judges halted the trial about 15 minutes after it started and adjourned the case until April 3.
Altunses was arrested in December in the middle of lessons at school after he accused Erdogan of being the "chief of theft, bribery and corruption" in comments at a student protest in the central Konya province.
A small group of supporters, including classmates, opposition lawmakers and activists, staged a protest in support of the boy outside the court today in Konya, Dogan said.
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